Improvement in chain-propellers



l l. NEUMANN.

Chain Prupellers.

Patented Dec. i0, 1872.

N, .AN

d y @immuun f ER @hummm- VUNITED STATES PATENT OFFICE.

4 JOHN NEUMANN, OE BROOKLYN, E. D., NEW YORK.

IMPROVEMENT IN CHAIN-PROPELLERS.

Speciicagtion forming part of Letters Patent No. 133,794, dated December 10, 1872.

To all whom it may concern l Be it known that I, JOHN NEUMANN, of

v Brooklyn, in the county of' Kings and State of New York, have invented a new and Improved Propeller for Boats, of which the followingis a specification:

My invention consists of an endless carrier ot wire ropes, chains, or belts running the whole length of the boat, over a drum at each end, in a channelalong the center of the boat, at the top, the ends, and the bottom, with numerous buckets extending `across the belt `or carrier and projecting from it at trightv ter, open at the bottom, closed at the top, andv mostly at the ends. B represents a large drum at the ends of the boat extending from the channel at the bottom to the channel at the top. O represents an endless carrier of wire rope, chains, or belts, of any suitable kind, arranged in the channel A and working over the drums. D represents the buckets attached to the carrier crosswise and projecting at right angles from it, being as long and wide as the ,channel will permit, and arranged as close tobraces attached to these buckets, near the outward edges, and extending on each side to the carrier, whereon they bear by a foot-piece, F,

to support them against the resistance of the water. They are not attached to the carrier, so that the latter will havev freedom to-bend in going around the drums. The power may be of any preferred kind, and Will be attached to the drums, or one of them, in any preferred way. G represents water-tight partitions dividing the channels from the interior space of the vessel.

It will be seen that by this plan a very large bucket capacity is obtained, whereby a great amount of power can be employed, and the action will not be such as to produce swells likely to interfere with the banks of a canal, so that the apparatus will be particularly useful for canal-boat propulsion; but it is also useful for river and lake navigation. l

Having thus described my invention, Iclaim as new and desire to secure by Letters Patentr A propeller for boats, consisting of an end'- less carrier, G, drums B, buckets D, and braces E, arranged in a central longitudinal channel, A, substantially in the manner described.

' JOHN NEUMANN.

Witnesses:

T. B. MOSBER, C. SEDGWICK. 

